Keystones — Lintel
Five GCSE retrieval questions · 13 July 2011 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 960,000 in standard form
Answer: 9.6 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 2)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 12cm, angle = 50°. Find opposite. Give your answer to 2 decimal places
Answer: 14.3cm -
4. Ratio Mixed ratio problems
Simplify: 16:12:8
Answer: 4:3:2 -
5. Statistics Mean
Calculate the mean of: 42, 23, 17, 46, 16, 8, 6, 47. Give your answer to 2 decimal places
Answer: 25.63